Finding the Fourth Proportional to 12,425.58, 17,148.51 and 9,276.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,425.58 : 17,148.51 = 9,276.30 : x
2. Step 2: Convert to fraction form
   12,425.58/17,148.51 = 9,276.30/x
3. Step 3: Cross multiply
   12,425.58x = 17,148.51 × 9,276.30
4. Step 4: Simplify right side
   12,425.58x = 159,074,723.31
5. Step 5: Solve for x
   x = 159,074,723.31/12,425.58
6. Step 6: Final answer
   x = 12,802.20